default-distrovars.inc: Add 'DISTRO_FEATURES_DEFAULT' variable

When making distributions based on the default distro-less config, it
is useful to be able to reuse the default DISTRO_FEATURES options
without the need of duplication. The new variable,
DISTRO_FEATURES_DEFAULT, allow this reuse and customization.

So distros can include 'default-distrovars.inc' and use:

,----[ Use example ]
| DISTRO_FEATURES ?= "${DISTRO_FEATURES_DEFAULT} myfeature"
`----

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Saul Wold <sgw@linux.intel.com>

diff --git a/meta/conf/distro/include/default-distrovars.inc b/meta/conf/distro/include/default-distrovars.inc
index 45f00ce18e0d9f5e366db907ff8122e7cd2d5b1b..d2755250007369d226c7300cb561aa27c122fbde 100644 (file)
--- a/meta/conf/distro/include/default-distrovars.inc
+++ b/meta/conf/distro/include/default-distrovars.inc
@@ -9,6 +9,7 @@ LIMIT_BUILT_LOCALES ?= "POSIX en_US en_GB"
 ENABLE_BINARY_LOCALE_GENERATION ?= "1"
 LOCALE_UTF8_ONLY ?= "0"
 
+DISTRO_FEATURES_DEFAULT ?= "alsa argp bluetooth ext2 irda largefile pcmcia usbgadget usbhost wifi xattr nfs zeroconf pci 3g nfc x11"
 DISTRO_FEATURES_LIBC_DEFAULT ?= "ipv4 ipv6 libc-backtrace libc-big-macros libc-bsd libc-cxx-tests libc-catgets libc-charsets libc-crypt \
                                        libc-crypt-ufc libc-db-aliases libc-envz libc-fcvt libc-fmtmsg libc-fstab libc-ftraverse \
                                        libc-getlogin libc-idn libc-inet-anl libc-libm libc-locales libc-locale-code \
@@ -17,7 +18,7 @@ DISTRO_FEATURES_LIBC_DEFAULT ?= "ipv4 ipv6 libc-backtrace libc-big-macros libc-b
                                        libc-posix-wchar-io"
 DISTRO_FEATURES_LIBC ?= "${DISTRO_FEATURES_LIBC_DEFAULT}"
 DISTRO_FEATURES_LIBC_class-nativesdk = "${DISTRO_FEATURES_LIBC_DEFAULT}"
-DISTRO_FEATURES ?= "alsa argp bluetooth ext2 irda largefile pcmcia usbgadget usbhost wifi xattr nfs zeroconf pci 3g nfc x11 ${DISTRO_FEATURES_LIBC}"
+DISTRO_FEATURES ?= "${DISTRO_FEATURES_DEFAULT} ${DISTRO_FEATURES_LIBC}"
 
 IMAGE_FEATURES ?= ""